Combined typewriting and computing machine



B. C. STICKNEY. COMBINED TYPEwnmNG AND COMPUTING MACHINE.

. APPucnlon mw mm. 29. |919. Pawnd Oct. 19, 1920.

3 SHEETS-#SHEET I.

Y B. C. STICKNEY. COMBINED TYPEWRIUNG AND COMPUTING MACHINE.

APPLCATiDN FILED MAR. 29, 1919.

Patented Oct. 19, 1920.

s. c. sTlcKNEY.

COMMNED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILD MAR. 29. i919.

Patented Oct. 19, 1920.

3 SHEElS-SHEET 3.

UNITED STATES PATENT OFFICE.

JJURNHAM C. STICKNEY, 0F ELIZABETH, NEW JERSEY, ASSIGNOR T0 UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW "YORK, N. Y., A CUBPORATION 0F NEW YORK.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

Application tiled March 29, 1919.

To all whom t 'may concern:

Be it known that I` BURNHAM C. STICK- Nnr, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Im rovements in Combined Typewriting and omputing Machines, of which the following is a specification.

This invention relates to computing nia chines, and is herein disclosed as applied to a combined typewriting and computing machine of the Underwood-Hanson type, wherein the numeral keys of the typewriter set up pins or indexingir devices correspondiup,r to the digits written as the carriage travels along, so that the digits represented thereby can be later carried into the numeral wheels. The mechanism as herein disclosed alsoincludes one form of theA complementary subtraction devices used in said machines.

In machines ofthat type, it is desired for some purposes to 'have the numbers printed in one form when added, and in another form when subtracted, thus enablin anyone inspecting the typewritten wor -sheet to ascertain at once Whether the digits written therein were 'added or subtracted. In order to enable the written-out work-SheetI to thus indicate the character of the work, the device may be such that when the typewriter carriage enters the zone in which subtraction` for example, is to be effected, the tlvpewriting mechanism should be locked or rendered inoperable unless subtraction is as a matter of fact Yeffected'. The connections for effecting this should preferably cover the whole of the subtraction zone. Since such machines, however, are sometimes used for writing other than computed digits in any column, the device should not print the digits in a manner to indicate subtraction unless deliberately made to do so.

With these and other a vantages in mind, the ordinary UnderwoodHanson machine is modified, so that wen the carriage enters a iveu zone the usual columnstop may be utilized as a means for compelling the typewriting to he effected in the uppencavfse for example. The column-stop maypexvercise this control throughout that zone. The device may be released from the control of the tabulating stop when the typewriter carringe passes out of this zone, preferably by Specification of Letters Patent.

Vals are actually beimY written.

lutciitcd Oct. 19, 1920.

serial No. 286.014.

having the stop engaged throughout the z one with a cam whose length is substaw tially identical with that of the zone.

In order to release the setting of the tvpewriter-controlling devices, thcv )nav be .connected to be released at the actuation of the general operator in a manner analogous to that sometimes used for releasinpr a subtraction setting. In order to permit the opera tion ofthe ordinary typewritei keys at the computing zone, the computingr keys mav be. the only keys adapted to be locked in such zone, thus makinar it unnecessary to alter the character of the typcwriting unless numer- The kev for disconnecting or silciicingr the computing `devices' may also make the locking devices ineffective, so far as controlled b v the com puting mechanism. The connections therefare may be such that it is the setting to subtraction which changes the character of typewriting, and that such changing is unnecessary unless computing is actually effected.

Other features and advantages will hereinafter appeal'.

In the accompanying drawings,

Figure 1 is a sectional side view, largely diagrammatic, of an UnderwoodHanson combined typewriting and computing machine, showing my invention as applied thereto, with the parts, set for normal writlng.

Fig. 2 is a View similar to Fig. 1, but taken nearer the center, showing the keys locked. with most of the other parts omitted.

Fig. 3 is a view similar to Fig. I, but taken nearer thel center, with man v of the parts omitted, and showing the mechanism set forsubtraction, unlocked and writing in upper case.

Fig. 4 is a perspective vien' of the 5 numeral-key typebar, showing the two kinds of types upon it.

VFi 5 is a perspective rear view of the tabu ator casing, showing the cam which co )crates with the column-stop.

ig. 6 is a skeleton perspective view. showing the typewriting connectionsk when writing outside of a computingr zone.

In the Underwood-Hanson machine` alhabet keys 10 and numeral keys 11, when epressed, carry down keylevers 12 and 13 'to Vswing sub-levers 14, so that each subrearwardly on 'its rockers 26, so as to free the escapement Wheel 23 from the dog 22 and hold it by the usual sohd dog 27. At this time no movement of the typewriter carriage takes place. 0n the return stroke of the type-bar, the dog 22 rengages the. escapement wheel, having in the meantime been drawn to the left, so that it no w feeds the escapement wheel 23 along one tooth, and allows the pinion 28, connected thereto, to revolve to the same extent, thus feeding the carriage alon one space, because the carriage is contro ed by the usual rack 29 meshing with the pinion 28.

In the computing zone, the numeral keys not only print and feed along .the carriage in the manner described, but they are also adapted Ito register the digits written, by depressing pins 30 upon pin' bars 3 1, there being a separate bar 31 for each denomination and a separate pin 30 on each pin bar 31 for each digit key. In order to effect this and to accomplish-the setting of the pins 30 upon the roper pin bars, each pin ar 31 is norma y drawn rearwardly by means of a spring, not shown, so that its pins normally stand out of alinement with in-setting bars 32. Inside the addin zone, owever, the pin bars 31 are moved s ightly forwardly one bar at a time, to bring their pins into line with the pin-setting bars 32, so that when any numeral key'11 is depressed, its pendant 33,- in descending, will strike the usual rock arm,34 and will cause the pin-setting bar 32, connected thereto, to

` set the proper digit pin upon the pin bar brought yto setting position.

To bring the pln bars to setting position, there is provided upon the carriageone or more settable dogs 35 adapted to ride seriontzmunder the front ends of jacks 36, thus depressing the rear ends 37 of the jacks to carry down rods 38, with the result that a each rod, when depressed, will move its pin bar 31 to setting position. The connections between the pin bars and the rods 38 may be of a usual form, which includes bellcranks 39, there being one bellfcrank for each rod 38, each hell-crank engaging a transposition member- 40, so that when a bell-crank 39 is rocked the transposition member rises and rocks a. small bell-crank 41 having an arm 42 lying against a pin 4?.

on its pin har, so that at the rising of theI transposition member 4U the pin liar is moved forward.

When a number ol pins hanl thus been set up to represent the digits in a minibar, the 'i digits represented are carried into the cornputing wheels 44 by drawin on the usual general-operator handle 45, willich, by means of the usual connections, causes the general operator, comprising a cross-,har 4G, to come forward and strike the rojecting ends of the pins, and carry the pm bars 31 foi-wn rd to an extent dependent on the position of the pins depressed, so that the usual rack 41T on each pin bar will turn its computing wheel to a corresponding extent. Upon the return movement of the handle 45, the pin bars 31 are returned t0 normal position by lugs 48 against which the cross-bar 46 strikes. The pins are returned to normal position by the usual pin-restorin r devices, not shown herein, but one form olinwhioh is disclosed in the patent to Hanson, No. 1,278,812, dated September 10, 1918.

In order to effect subtraction, there is provided aA subtraction key 49, which, when pushed rearwardl is adapted to shift the mechanism in suc a way that the numeral 4keys 11, when depressed, instead of setting u the digit pins 30 to drive the rack bars 4i) an amountV proportional to the keys depressed, will depress ins adapted to drive the rack bars a comp emental amount. To enable this-to be done when the subtraction key 49 is ushedrearwardly, its rod 50, which is pivoted to a long rock arm 5l, rocks a subtraction dog shaft 52, so as to carry a subtraction dog 53 to ineffective po sition4 clear of the notch flfby which the dog normally holds asubtractionsctting bar 55 against the tension of a spring When the dog53 releases the bar 55, so that the s ring 56 can draw it'rearwardly, the bar s ifts the usual rock shafts 57 by which the rock arms 34 operate the setting bars or linkages 32 in the usual manner, thereby moving additionI rock arms 58 clear of the additionl wrists, which the linkages are normally actuate and, at the same time, moving the subtraction rook arms 59 to engage with subtraction wrists 60, the two sets of wrists and arms heilig so arranged that when the rock shafts 57 are thus shifted, the numeral keys 11 will be effective on complementary linkages 32, and-therefore set complementary pins` 30.

The connection between the subtraction bar 55 and the Shafts 57 may be of the usual form, which includes a rocking plate (l1 adapted to be swung around its pivot (l2, hy means of a bell crank 63 engaging a pivot 64. upon vthe bar 55. In addition, the usual connections (not shown) set all the t pins 30 at the actuation of the subtraction-setting bar 55. In addition, the setting of thc carriage enters subtraction bar 55 makes a 9 pin-restoring bar G5 effective in the usual manner. One form of the above and other conneca tions is shown in the aforesaid patent 1,278,812.

According to the present invention,` inV addition to setting the mechanism to subtraction, the actuation of the subtraction key may be effective to change the character of the printing. In the present disclosure, this change in the printing is illustrated as being eected by changing the case in which the l5. effect this, the usual case-shift mechanism of the Underwood typewritingmachine may be utilized, which includes the shift carriage 19, having the usual roll 68 running upon the usual shift rail 69 in such a wa that when the rail' 69 4is raised,the platen is lifted to cause upper-case types 70 to print upon a work-sheet instead of the lower-case types 16, whichnormally print thereupon. In order to shift the rail 69, it may form a part ofthe usual shift ,ra1ne,which includes bell-crank ends 72 and a connecting cross-bar 73, each bell-crank end having a downwardly-extending arm 74 behind which lies an upwardly-extending arm7 5 on a shift-ke lever 76, with the result that when the shift-key lever76 vis depressed, the shift rail 69 is raised.

In order to e'ect the depression ofV the shift lever` 7 6 at the actuation of thesubtraction rod 50, there may ybe Vprovided p upon the subtraction rod a pin 77 lying in front of a lower arm 7810i a bell 'crank 79, which is pivoted at 80, upon the framework of the typewriter. Whenever thesubtracn tion key 49 is ushed rearwardlyt0 carry its rod rearwar ly, the bell crank 79i-Swings down, carrying down a in 81 fast upon the shift lever 76 near the s ift key 82, with the result that the lever 76 moves downward and the shift rail 69 movesupward.

In order to compel the typist when entering a subtraction zone to actuate the subtraction key 49, there may be providedv a suitable tappet 83 settable u on the typewriter carriage, and adapte numeral keys upon entering the 'subtraction zone. This tappet 83 is herein shown as a column-stop settable on the usual columnstop bar 84 and provided with an extension 85, which, at the moment Athe typewriter a subtractionv zone,V is adapted to strike a cam 86, preerably of the length of the subtraction zone, with the result that the cam 86 is-depressed to lock the numeral keys by carrying a locking bail 87 under suitable hooks 88 upon the numeral key levers. The connections forIaccomplishing this include a rod: 88a'uponV which the cam 86 is mounted,fsaid rod passing through a guide-plate 89 and extending downwardly to a rock arm 90, upon type-heads 67 print upon the type-bars o to lock theA Itappet 83 passes out of the subtraction zone,

when it clears vthe cam, and allows the sprinr 92 to draw the link 94 rearwardly; and then a spring 96 swings the locking 'fbail 87 rearwardly, thus unlocking the keys.

To unlock the keys when the typist deresses the subtraction key 49, there may a e'fprovideda lug 97 upon the subtraction key rod 50. Said lug, when pushed'rear- Wardly, is adapted to strike a pin 98 upon la collar 99, fast upon the front part 100 of the thrust link 94. When the subtraction key 1s thus depressed, it carries the bail 87 rearwardlybecause the part 100 of the thrust link'is slidable rearwardly on Athe rest of the thrust link, since it is connected ythereto by means of a spring 101 lying within a bore 102 of the thrust link 94, against which s ring the end 103 of the part 100 bears. n order to limit the travel of the Apart 100 relativelypto the rest of the link 94, the Ypart'100 may be provided with a pin 104 workingin a slot 105 of suitable length to limit its throw.

The mechanism may include the usual decimal-tabulating counter-stops 106, which are `diagrammatically illustrated herein, and which serve to release and arrest the carriage at the proper point by cooperating with the column-stop 83.4

vDuring most of the travel of the carriage, the denomination-selecting dog 35 stands 'considerably below the jacks 36, and is only brought up to eifective position in the computing zone, there being provided to effect this a usual silencing roll 107, journaled upon arms 10S, which are pivotally mounted at 109, so that a spring may normally hold the silencing roll-107 in etfective position. When the roll 107 is'thus held ineffective position, the dog 35 is raised into effective position when entering the computing zone, since it is mounted upon a swinging block 111, so that it can swing around a rod 112 when its spool 113 engages the silencing roll 107.

The silencing roll may be set to ineffef.L tive position againstV the tension of vits spring 110, there being provided for this purpose a silencing or non-add key 114, which isV mounted on the front ond of a long push-rod 115, and, when pushed rearwardly, carries vrearwardly the long rock arm 116of'a rock shaft 117, to which it is pivoted at 118, so that a follower 119, also [all ,Upright 111g y121, ,Whih 'lies rin front,of a1pjin f1 22fori'l'arock,@111123, fast lto a ransversefsh'aft1124,' sotliat when the {mD-,add keyllfi fpushed rearwardly, it willrpckthe Shaft 124,139 cause a' second ineffective herein illustrated, for convenience, as jouron the cover plate 127 between thecoinputing mechanismand the puting machine, the combination with typeposition. The rock rshaft 124 ,is

naled in ears 126 up typewriting mechanism.

' 'In order toenahle themen-add key 114 jIt .will beliiote'l that thereis no need for "any such -sletierf thlibtractin key 49 since when o call-y .at 13 2.

there pi :pushed rearwardly the dog, 53 is caug tunderthe bottom of the barg'asclearlyshownin F1g.` 3, 1n

.operator V46* com es 'fqrvva'rd ,and releases the by drawing on the subtraction b ar `55 w en it strikesthe lug 131 on said bar. This 4draws the bar 55 Lfqrvrard and 4permits the dog to be made eii'ective by its returning spring, shown diagrammati- Variations may be resorted to within the scope of the invention, and ,portions of the im roveinentsniay be used without others.

aving thus described my invention, I claimt" 1- 1. In a combined typewriting and coinputing machine, the combination with t Writer numeral keysfand'a traveling carriage, of a device for locking said '.keys, a camof limited length, a follower ladapted to strike said cam Yand be effective throughout `the length of Said Cam, a plunger connected to the cani for making tive, said plunger comprising ends .having a limited longitudinal movement with rcbail`87- ineffective, `to Y' Pulling.:l To laccomplish this, the Arod l'115 'is providedfviith untilthe general t the locking device eii'ecspect to each otlie ends of said plunger so as apart and normal] computing devices,

tended, key, and a conne subtractionkey is 'compressed to re lease the locking device.

combined typewi'iting and com- ,puting machine the combination vvitliv type- Writer .numeral ke i limited length, a foloiver fadepted 't0 strike su s anda travelinr carid cam, a normally in- "eifectivelocking device for said numeral other, hold saidY whereby said follower ein `Contact .with each locking device effective,

computing dtevices,.a subtraction key, ,and nieansgwhereby ,the actuation of the subu traction4 keyer'nakes the locking device in efe'ctive irrespecti ve of the position of the ,cam V and the follower.

3. In a combined vtypeivriting and coinj. ;:vriter nurneral^keysand a traveling `car- 'lignitedlengtlna follower normally iii- 'Lieffectiveflockingdevice for said numeral 'andsaid cam, while i other, hold saidv comp'u'tin ,the computingd keyivhfebyithe a'" co`iinecti on whereby said follower n Contact with each `locking device effective, a subtraction key,

sub-

verloftlie position of the wer, connections between evices and the subtraction subtraction key remains set, .devices formino" part of the computing :,kys elle? Set lun; famine part of computing Wheels digits' Written ,by the ai .general .Qneretor also. the 'computing devices,

into which the general operator carriesythefdigits set up, and a connection ivliereb the effects the return general operator of thejsubtraction kev to ','ilormallposition to permit the lockingde v'iceto come under the control oi the cam and 'the follower. 4. `In a combi ned typevvriting and cointhe comblnation with type-l writer numeral keys and-a traveling cardevices Ifor said keys, a

ricade eiifejctive, by said carriage vmeans,

L aetueied 'by Sei devices effective, means, etuated cam tdmake the locking pute key. ns ineffec- 1`dev1ces.

typewriting and com- Q p uting machine, thecombination with typevWriter nun'ljeifa l keyskand a traveling carriage, of, locking cam :made eflectiv actuatedby said deviceefor said keys, a e by said carriage means, cam to make ,the locking ya non? compute key, and lb'y said non-com y yfor making the cani ac tuatedinea tive on said lookin .In a combine,

devices reflective, a non-compute key, means, actuated by said non-compute key, for mak ing thc cam-actuated means ineffective 0n said locking devices, and a subtraction key adapted to make the cam-actuated means ineffective on said locking devices..`

(5. In a combined typewriting and computing machine, the combination with typewriter numerals keys and a traveling carriage, of locking devices for said keys, a cam made eective by said carriage means, actuated by said cam to make -thelocking devices effective, a non-compute key, means, actuated by said non-computekey, for making the cam-actuated means "ineffective on said locking devices, a' subtraction key adapted to make the cam-actuated means ineffective on said locking devices, connections whereby the subtraction key when made effective remains effective to the end of the computing zone, and connections whereby the completion of a computation releases the subtraction key.

7. In a machine of the class described,ithe combination with a travclin carriage and'a tappet thereon, ofa cani' agajpted to"be de? pressed by said tappetbv'eracolumn lof substantial width, typewriter' keys,"l a'fbail for locking said keys, a train of connections between said bail and saidv carn,"an`d a spring forming part of saidtrainto enable the bail to be moved independently of thecam. f'f

8. In a machine ofthe clas'sf'described, the combination with a traveling carriage and a tappet thereon, of a cam'adapted to be depressed by saidl tappet over a 'column of substantial width, typewriter numeral keys, a bail for locking said keys, a train of connections Vbetween said bail and said ram including a composite rod, a spring connection forming part of said rod to enable the bail to be moved independently of the cam. and computing devices including a depressible subtraction key, a subtraction bar adapted to be released by said key', a dog by which the key holds the bar, said bar comprising a portion adapted 4vto hold the dog to hold the key depressed and a'general operator also forming part of said 1,computing devices adapted to restoreV said subtrac tion bar to release the subtraction key.

9. In a combined typewriting and computing machine, the combination with typewriter numeral keys and a traveling carriage, of a device for lookin said keys, a cam of limited length, a fol ower adapted to strike said cam and Vbe effective throughout the len th of said cam, a plunger connected to t e cam for making the locking device effective, said plunger comprising ends having a limited longitudinal movement with respect to each other, a spring acting on the ends of said plunger, so a's' to urge said ends apart and normally hold the er extended, computing devices, a suba connection whereby when the subtraction key is actuated the plunger is compressed to release the locking device, double-case types operable by said keys, and a'connection whereby the subtraction key, when effective, makes the normally ineffective case of the types effective to print.

10. Ina combined typewriting and computing machine, the combination with Atypewriter numeral keys and a travelin ycarriage, of lacam of limited length, a fo lower adapted to strike said cam, a normally ineffectivefloclring device for said numeral keys', afconnection whereby said follower and said cam,'while in contact with each other, rhold said locking *device effective, computing devices, a subtraction key, means whereb the actuation of the subtraction key ma esthe locking device ineffective irrespective of the position of the cam and the followerfdouble-case types operable by said keys, *and ',a connection 'whereby Jthe subtraction key, when effective, makesthe normailyiiiefect've case of the types effective toY print.' y` 'A 'il 11. In a comined typewritngand computing machine, 'the combination with typewriternumeral keys and a travelin'g'carriage,'of:` a cam of `limited length, a` fo lower adapted to strike 'said cam, a' normally inv effectivel locking device for said numeral keys, a' connection whereby -said follower and saidcam, while ih contact' with each other, hold said' locking device effective, computing devices, a subtraction key, means whereb the actuation of the subtraction key makes the locking device ineffective irrespective of the position of the cam and-the follower, connections between the computing devices and the silbtraction key whereby `thesubtraction key remains set, devices formin' part of the' computing devices on which t e digits written by the keys are set u a general operator also forming part ci) the computing devices, computing wheels into which the general operator carries the digits set up, a connection whereby the genl eral operator effects the return of the subtraction key to normal position to4 permit the locking device to come under the control of the cam and the follower, doublecase types operable by said keys, anda connection whereby the subtraction key, when effective, makes the normally ineffective case of the types effective to p-rint.

12. In a combined typewriting and computing machine, the combination with type writer numeral keys and a traveling carriage, of locking devices for said keys, a cam made effective by said carriage, means actuated by said cam, to make the locking devices effective, a non-compute key, means, actuated by said non-compute key, for making the cam ineffective on said ocking deplung traction key,

vices, a subtraction keyadapted 'to make the cam'` ineffective on said;lockin devices, double-case types ,operable by-said eys, and a: connectionwherebythe subtraction key, when eifective,nlakes the normally inel'ective case Yotthe types e'ective to print.

13.. In/.a combined typewriting and com'- puting; machine, Y the combination. with' typewriter numeral Y keys ,and a ,trayeling carria.g`g' -ef` locking devices for said.v keys, a cam.madeefect1vefby said carriage, means,

actuatcdbysaidfoam; tomake the lock-ing` devices, eiiectiveia non-compute* key,A means,

actuatedeby:saidvnon-compute ke .for makingf,-the-oam ineffectiveonf-said.y ockng devices, a subtraction key' adaptedl to make the cam- Aiini'eetive on `said f locking, devices,

connections wheipbywhe subtraction keywhen ymagde--ef`e;cti,ve, remains eifeotiveto the; end mi* 15.1.1.8- ennemies.' Zonegvnnssiivns. whereby the. completion. of' a 'computation releases? they subtraction key., .double-oase' tienes 'ene/.fehle by .said-'i keys-ende 69111169@ tion-whereby' theislrbtwbwef ken.' when' 'efe febtive, mak'es the normally inel'ectiyleigzase; 0f thesypesfvesorpntf..--. -v i 14 .Is-a 'eelsbinsdgtypsnlitaa and com puting ,nrachinetl1e-combi nationfwith type-- writer' .numeral keys; and "a traveling carria:ge,=jof4 upper and. lower casetypesoperable bysaid keys, a platen .against which said-*keys print,mean sfon sliftingthe posi.-Y tionof-:saidhpplatento .alterthe case,. come.. putingg devicesga` subtraction key for. said computing: Idevices," connectionsVr whereby said subtraction keyoperates said. platenshifting-means, and a. carriage-controlled lock VNfor thenumeralfkeys, adaptedvto be released bythe Voperation of saidsubtraction key. P v A 15. In -a combined-typewriting and computing' machine, the combination with. typewriter numeral keysanda traveling'carriage,oupper aindrlower. case .types oper,-l ablebysaidkeys, a.. platen against. which .sa/idlniysprintqI means for shiftangthe ,position ofY said platen to alter the case, computing:devices,y a subtraction key for. said computing devices, connections 'whereby said subtraction key. operates said platenshift means,.afcarHage-.cOntrOHed lock forl thenumeral keys, adapted to be released by the'voperation of. said subtractionJ key, con,- nections'eincludedin said devices, for holding said platen-.shift means effective throughout the computingfzone, and-'means whereby the completion of a computation releases `said platen-shift means. 16.` Ina machine of the class described, the combination with a subtraction key and a case-shift key, of a connection whereby the subtraction key operates the case-shift key` typewriter numeral keys, a'lock for said numeralkeys, a carriagecontrol for said lock, and a connection for releasing said lock byoperation of the subtraction key.

17.111 a combined typewriting and com4 puting machine, the combination with type-- writer numeral keys and a traveling cui'VV riage, of printingdevices for printing in upper and lower case,- operable by said keys, case-shift devices, computing devices, a suhA traction key for said computing devices adapted .-to operate said case-shift devices, :i lockffor said numeral keys, said carriage controlling said lock, and a connection whereby the operation of the subtraction key releases the lock..

18. In4 a combined typewriting und computing machina-the combination with typewriter numeral' keys and aA traveling cai'- riage, of printingdevices for printing in upper and lower case, operable by said keys, caseshift devices, computing devices, a suhtrracltion key 4.for said computing devices adapted. to operatofsaidfcase-shift devices, a lockjfor said tnumelgal keys, said carriage controllin 1, said. lock, lconnection whereby the operationyoff the subtraction key releases the lookyasulitraction bar for holdin said subtractionkey e'fective, and means ign returning-said?subtractionrbar to normalA position latthe close of'acomputation. A 19. In a. combinedjtypewritingand computingmachine,.thejcombination iwith typewriter numeral keys and a traveling carriage, ofvprintingxdevicesfor Vprinting in upper andlower. case, Qperableby said keys, case-shift devices,computingY devices, a sub traction key for said, computing devices adapted to operate' saidj case-shift devices, :i lock--for said numeralskeys, said carriage controlling *saidilock a connection whereby the operation of the subtraction .key releases the lock',and.afcarriage-controlled cam, extending. semedistancealong the travel of said. .carriage, forming' lockoperating means. f Y 20.' In. a;combined-typewriting and computing machinethe combination with typewriten n'umenalkeys and a 4.traveling carriage'Vof printing, devices lfor printing, in upper `and `lower case, operable by saidikeys, case-shiftfdevices, cornV u-t'ing devices, asu!)- traction) key. for-,sai computing devices adaptedto .operate said case-shift devices. :i lock Lforasaid-numeral keys, said carriage controlling saidilock,` a connection whereby the operationbthe Isubtraction key releases thelock, alsubt'ractiombar -or holding said subtraction keyeffective, meansfor returningsaid subtraction bar to Anormal position at.,tl 1e close1off; aA computation, and a carriage-'controlled cam, extending some distance, a-1ongthetravel of said carriage, forming. lock-operating means.

211A In a machine, of the class described` the conrbinatiolnV with a travelingcarriageA and a tappet'thereon, of computing devices,

a cam adapted to be depressed by said tappet over a column of substantial width, typewriter' numeral keys, a bail for locking said keys, a train of connections between said bail and said cam, including a composite rod having a spring connection forniing part thereof to enable the bail to be moved independently of the cam, and a subtraction ke'y for so moving said bail.,

22. In a machine of the class described, the combination with a traveling carriage and a tappet thereon, of computin devices, :i cam adapted to be depressed by said tappet over a column of substantial width, typewriter numeral keys, a bail -or lock-ing said keys, 'a train of connections between said bail and said cam, including a composite rod having a spring connection-forming part thereof to enable the bail to be moved independently of the cam, and a non-add key for so moving said bail. Q y

'23. In a combined typewriting and .computing machine,

, writer numeral keys and a traveling carriafre. of a device out the length of said cam, a plunger connected to the cam for makingathe locking device effective,l said plunger .comprising ends having a limited longitudinal movement with respect acting on the ends of said plunger, so as to urge said ends apart and normally hold the plunger extended, computing devices, a subtraction key, a connection whereby when the subtraction key is actuated the plunger is compressed to release the locking device, double-case types operable by said keys, a connect-ion whereby the subtraction key. when effective, makes the normally ineffective case of the types eifective to print, :ind a non-add key adapted to release the locking device independently of the subtraction key.

24. In a combined typewriting and computing machine, the combination with typewriter numeral keys and a traveling carriage. of a cam of limited length, a follower adapted to strike said cam, a Vnormally inefi'eetive locking device for said numeral keys, a connection 'whereby-said follower and said cam. while in 4Contact with each other, hold said locking device effective. computing devices, a subtraction key, means whereby the actuation ot the subtraction key makes the locking device ineffective irrespective of the position of the cam and the follower, double-case types 0pereble by said keys. a connection whereby the subtraction key, when effective, makes the normally ineiiective case of the types effective to print` and a non-add key adapted to release the locking device independently of the subtraction key.

computing devices, connections the combination with type-,V

for locking saidrkeys, a

cam of limited length, a follower4 adapted to strike said cam and be effective through-` to each' other, a spring 25. In a. combined typewriting and computing machine, the combination with typewriter1 numeral keys and a traveling carriage, of upper and lower-case types o erable by said keys, a platen against wiieh said keys print, means for shifting the position of said platen to alter the case, coinputing devices, a subtraction key for said whereby said subtraction key operates said `platenshifting means, a carriage-controlled lock for the numeral keys adapted to be released by the operation of said subtraction key, a non-compute key, and a connection whereby the non-compute key releases said lock.

26. In a combined typewriting and computing machine, the combination with typewriter numeral keys, and a traveling carriage, of upper and lower-case types operble by said keys, a platen against which said keys print, a case-shift key for altering the position of said platen to alter the case, computing devices, a subtraction key for said. Acomputing devices, connections whereby said subtraction key operates the case-shift key, ,af carriage-controlled lock for the numeral keys adapted to be released by theoperation of said subtraction key, connections included in said devices for holding the case-shift key eiective throughout the computing zone, means whereby the completion of a Vcomputation releases the case-shift key, a non-add key, anda connection whereby the non-add key makes said lock ineffective. l

27. In a machine of the class described, the'combination with a'subtraction key and a case-shift key, of a connection whereby the subtraction key operates the 'case-shift key, typewriter numeral keys, a lock for said numeral keys, a carriage control for said lock, a connection for releasingr said lock by operation of the subtraction key. a non-add key, and a connection whereby said non-add key makes the lock ineffective.

28. In a combined typewriting and computing machine. the combination with typewriter numeral keysand a traveling carriage, of printing devices for printing in upper and lower-case operable by said keys, case-shift devices, computing devices, a subtraction key for said computing devices adapted to operate said case-shift devices, a lock for said numeral keys, said carriage controlling said lock, a connection whereby the operation of the subtraction key releases the lock, a non-add key, and a connection whereby said non-add key makes the lock ineiiective.

29. In a combined typewriting land computing machine, the combination 'with typewriter numeral keys and a traveling carringe. of printing devices for printing in upper and lower-case operable hv said keys, case-shift devices, computing devices, a sub- 2:5" said lcarriage forming lock-operating means,"Y

'adapted tof make the.;

`the operation of the traction key for adapted to operate said cese-shift devices, a. lock for said numeral keys, said carriage controllingr said lock, a connection whereby subtraction key releases the lock, a subtractionbar for holding said subtraction key effective, means for returning said subtraction bar to nor mal position at the close of a computation, a non-add key, and a connection whereby said non-add key makes the lock ineffective.

30. In a,combinedtypewriting and computingr machine, the combination with typewriter numeral keys and a, traveling carriage, of printing devices for printingin upper and lower-case operable by seidE keys, case-shift devices, computing devices,- e' subtraction key for adapted to operate said case-shift devices, a lock for said numeral keys, said carriage controlling said lock, a the operation) of the subtraction key" releases' the lock, a carriage-controlled cam extending some distance Yalong ythe tiayel of and anon-eddkey cam ineffective to'operatle the lock.

31- In a combined typewting'and com-f puting machine,E the combination'.- withtypewriter numeral keys and altraveling carriage, of *printing devi'ces forpri'nting upper'and lower case operable by'slaidi' keys, case-shift devices, computing devices, asubtraction' key for said computing. devices adapted to operate said case-shift devices, a lockV for said numeral keys, fa' connection whereby thev operation of the subtraction key releases the lock, e cam extending some distanceralong tlietravel of said carriage foriningloclropereting' means an adjust` able cam-operating tappet on the carrie e, and means for making the cam ineffective at will.

32. In a machine of the class described, the combination with a subtraction key and a case-shift key, of a, connection whereby lthe subtraction key operates the case-shift key, typewriter numeral keys, el bail for locking said numeral keys, a carriage control for making'said bail effective, and a lug on the subtraction key for releasing'said bail by operation of the subtraction key.

33. In a combined'typewriting and computing machine, the combination with typewriter numeral keys nnd atraveling carriage, of a swingingi bail for lockini,r said keys, a 'cam of limited length, a follower adapted to strike said cam and be effective throughout the length of said cam, a plunger connected to the cam for making the bail effective, said plunger comprisingr ends having a limited longitudinal movement with respect to each other, e spring acting on the ends of said plunger so as to urge said ends apartv and normally hold the plunger said computing devicesv said computing devicesV connection whereby extended,` computing devices, a subtraction key,4 and a lug on the subtraction key adapted to compress the plunger to swing the bail to release the keys.

34. In a combined typewriting and vom puting machine, the combination with type Writer numeral keys and a traveling wir riage, of a swinging bail for locking said keys, a cam of limited length, a follower' adapted'to strike said cam and be effective throughout thelength of said cam, a plunger connected to 'thei cam for making the bail effective, said plunger comprisingr ends having a limited llongitudinal movement with respect to eachother, a spring acting on the ends of said plunger so as to urge said ends apart' and normally hold the plunger ext'end'ed, computing devices, a subtraction key, a lug on the subtraction key adapted to compress t/'he plunger to swing the bail to release the keys, and anon-compute key comprlslng'a lugalso adapted to release the keys. l

"35; Inaf combined typewriting and computing machine', the combination with ty-pe- Writer numeral keys and a traveling carriage,-of aI device for locking said keys, a primary member Inourite'don the carriage, a secondary member yieldably supported in the path ofsaidpmeriymember, said members beingI-sot shapedthat the secondary member, uponengagement by the primary member," will be shifted to a predetermined positionandi there maintained while passing through a computing zone, a train of connections bet-Weensaid secondary member and said lockingr device whereby the latter may be rendered'effective by the former, said train of connections including a yieldablc element, a subtraction key, and means whereby'actuetion ofsaid subtraction key will overcome said=yieldable element and render said locking device ineffective.

36. In a combined typewritin'fr and coinputing machine, the combination with type- W'riter numeral keys and a traveling carriage, of a. cam off'substantially the length of a computing zone, a follower adapted'to strike said cam, 'a normally ineffective locking device for said numeral keys, a connection 'whereby seid follower and said cam, while' in oontactl with each other, hold said locking device effective, said connection comprising a `yieldeble element, a subtraction key, andmeans whereby actuation of the subtraction key will overcome said yieldable element and' render the locking device ineffective.

37. In a combined typewritingr and computing' machine, the combination with a traveling carriage, of typewriter keys provided with hooks, a bail to cooperate with said hooks to lock said keys, said bail being,r normally in ineffective position, a link connected With said bail, carriage-actuated means eiective, while passing through a computing zone, to yieldingly urge said link to move said bail to effective position, a stud projecting from said link, and a subtraction key having a projection adapted to engage said stud, so that depression of said subtraction key will aotuate said stud and thereby move said link and consequently the bail to ineiective position.

38. In a combined typewriting and computing machine, the combination with a traveling carriage, of typewriter keys provided wlth hooks, a ball to cooperate with said hooks to lock said keys, said bail being normally in ineffective osition, a link connected with said bai carriage-actuated means effective, while passing through a computing zone, to yieldingly urge saidlink to move said bail to effective position, a stud projecting from said link, a subtraction keg having a finger adapted to engage said stu so that depression of said subtraction key will actuate said stud and thereby move said link and consequently the bail to ineffective position, a second finger to engage said stud, 25 a non-compute key, and means whereby said non-compute key, when depressed, will actuate said second inger so as to move said bail to ineffective position.

BURNHAM o. STICKNEY.

Witnesses JENNIE P. THoRNE, EDITH B. LIBBEY. 

